51007207 has 2 divisors, whose sum is σ = 51007208. Its totient is φ = 51007206.

The previous prime is 51007199. The next prime is 51007247. The reversal of 51007207 is 70270015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51007207 - 2³ = 51007199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51007247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25503603 + 25503604.

It is an arithmetic number, because the mean of its divisors is an integer number (25503604).

Almost surely, 2^51007207 is an apocalyptic number.

51007207 is a deficient number, since it is larger than the sum of its proper divisors (1).

51007207 is an equidigital number, since it uses as much as digits as its factorization.

51007207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 490, while the sum is 22.

The square root of 51007207 is about 7141.9330016460. The cubic root of 51007207 is about 370.8604445047.

The spelling of 51007207 in words is "fifty-one million, seven thousand, two hundred seven".